Attainable speed factor for preloaded bearings in the N 10 and NN 30 series
| Preload | Speed factor | |
| min. | max. | A = n dm |
| µm | mm/min | |
| 0 | 2 | ≤ 1 300 000 |
| 1 | 3 | ≤ 1 000 000 |
| 2 | 5 | ≤ 500 000 |
| n = rotational speed [r/min]
dm = bearing mean diameter [mm] = 0,5 (d + D) |
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